| 4901 | Heart Land Petroleum Corporation | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 4902 | Heartland Production, Inc. | Cuero, TX 77954 | Oil & Gas Operator | Jul 2026 |
| 4903 | Heartland Resources, Inc. | Temple, TX 76501 | Oil & Gas Operator | Mar 2008 |
| 4904 | Hebron Energy, LLC | Dallas, TX 75206 | Oil Operator | Jul 2018 |
| 4905 | Hec Petroleum, Inc | Midland, TX 79705 | Oil & Gas Operator | Mar 2006 |
| 4906 | Hedrick Production Inc. | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Jul 2026 |
| 4907 | Heflin, Bryan Exploration, Inc. | Strawn, TX 76475 | Oil & Gas Operator | Mar 2008 |
| 4908 | Heifer Production Company LLC | Houston, TX 77098 | Oil & Gas Operator | Jul 2026 |
| 4909 | Heights Energy Corporation | Plano, TX 75026 | Oil & Gas Operator | Jul 2026 |
| 4910 | Heinrich Production Co Inc | Lubbuck, TX 79424 | Oil Operator | Dec 2024 |
| 4911 | Heisey Ventures, Inc. | Houston, TX 77019 | Oil & Gas Operator | Jul 2026 |
| 4912 | Held By Production, Inc. | Houston, TX 77251 | Oil & Gas Operator | May 1996 |
| 4913 | Helios Operating, LLC | Houston, TX 77056 | Oil & Gas Operator | Jul 2026 |
| 4914 | Helis Oil & Gas Company, L.L.C. | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2023 |
| 4915 | Helis, William G. Co., LLC, The | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2003 |
| 4916 | Helis,WM.G.,Est., A Partnership | New Orleans, LA 70130 | Oil & Gas Operator | Aug 2003 |
| 4917 | Hellifino Operating, LLC | San Antonio, TX 78212 | Oil Operator | Jul 2026 |
| 4918 | Hellums, Harold | Cedar Creek, TX 78612 | Oil & Gas Operator | Mar 2008 |
| 4919 | Helmcamp, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2002 |
| 4920 | Helmerich & Payne, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Mar 2026 |
| 4921 | Helms Oil & Gas, LLC | Midland, TX 79710 | Oil & Gas Operator | Jul 2026 |
| 4922 | Helo Energy, Inc. | Borger, TX 79008 | Oil & Gas Operator | Aug 2001 |
| 4923 | Helton Petroleum | Pampa, TX 79066 | Oil & Gas Operator | Jul 2026 |
| 4924 | Helton, Pat A. & Alberta | Allison, TX 79003 | Oil & Gas Operator | Jul 2026 |
| 4925 | Hemco Development, LLC | Dallas, TX 75201 | Oil & Gas Operator | Nov 2020 |
| 4926 | Hemco Production, L. L. C. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2016 |
| 4927 | Hemus, Inc. | Bellaire, TX 77401 | Oil & Gas Operator | Sep 1994 |
| 4928 | Henderson & Erickson, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jul 2026 |
| 4929 | Henderson Natural Res, L.L.C. | Crozet, VA 22932 | Oil & Gas Operator | Jul 2026 |
| 4930 | Henderson Petroleum Corp | San Angelo, TX 76906 | Oil & Gas Operator | Jul 2013 |
| 4931 | Henderson, Bryan, Co. | Dallas, TX 75225 | Oil & Gas Operator | Jul 2026 |
| 4932 | Henderson, Peter Oil Co. | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2020 |
| 4933 | Henderson, Sam F. | Odessa, TX 79760 | Oil & Gas Operator | Nov 2002 |
| 4934 | Henderson, Sam W. | Iowa Park, TX 76367 | Oil & Gas Operator | Jun 2019 |
| 4935 | Hendrix, John H. Corporation | Midland, TX 79705 | Oil & Gas Operator | Sep 2018 |
| 4936 | Henley Operating | Nocona, TX 76255 | Oil & Gas Operator | Jul 2026 |
| 4937 | Hennan Resources, Inc. | Great Neck, NY 11021 | Gas Operator | Nov 1997 |
| 4938 | Hennig Production Co., Inc. | Tyler, TX 75701 | Oil & Gas Operator | Jul 2026 |
| 4939 | Henry Paul Petroleum, LLC | Pampa, TX 79066 | Oil & Gas Operator | Jul 2026 |
| 4940 | Henry Petroleum Corp. | Midland, TX 79703 | Oil & Gas Operator | Mar 2001 |
| 4941 | Henry Petroleum LLC | Flower Mound, TX 75028 | Oil & Gas Operator | Jul 2026 |
| 4942 | Henry Petroleum LP | Midland, TX 79701 | Oil & Gas Operator | Dec 2008 |
| 4943 | Henry Production Company, Inc. | Lafayette, LA 70505 | Oil & Gas Operator | Oct 2019 |
| 4944 | Henry Resources LLC | Midland, TX 79703 | Oil & Gas Operator | Jul 2026 |
| 4945 | Henry, J.R. Inc | Brenham, TX 77833 | Oil & Gas Operator | Jul 2026 |
| 4946 | Henry, John Petroleum | Dallas, TX 75225 | Oil & Gas Operator | Dec 2001 |
| 4947 | Henscheid, Rufus | Muenster, TX 76252 | Oil Operator | Jan 2020 |
| 4948 | Henson Exploration, L.P. | Abilene, TX 79608 | Oil & Gas Operator | Jul 2026 |
| 4949 | Hep Oil Company, LTD. | Gainesville, TX 76240 | Oil & Gas Operator | Mar 2012 |
| 4950 | Hep Oil GP, LLC | Gainesville, TX 76241 | Oil & Gas Operator | Mar 2015 |
| 4951 | Herber, Carl R. | Denton, TX 76205 | Oil & Gas Operator | Apr 2014 |
| 4952 | Herbig Oil & Gas Co. | Midland, TX 79705 | Oil & Gas Operator | Jul 2026 |
| 4953 | Herbig, J F | Midland, TX 79701 | Oil & Gas Operator | Mar 1998 |
| 4954 | Herbst Resources, Inc. | Mandeville, LA 70448 | Oil & Gas Operator | Aug 2003 |
| 4955 | Herd Producing Company, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Jul 2026 |
| 4956 | Hereford, J. A. Industries, Inc. | Nacogdoches, TX 75961 | Oil & Gas Operator | Jul 2026 |
| 4957 | Herencia Operating LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | Jul 2026 |
| 4958 | Heritage Energy Corporation | Waco, TX 76710 | Oil & Gas Operator | Sep 2004 |
| 4959 | Heritage Expl. & Prod. Co., Inc. | Stafford, TX 77497 | Oil & Gas Operator | Dec 2000 |
| 4960 | Heritage Operating Co., Inc. The | Stafford, TX 77497 | Oil & Gas Operator | May 1997 |
| 4961 | Heritage Petroleum Corporation | Cleburne, TX 76033 | Oil & Gas Operator | Jul 2026 |
| 4962 | Heritage Petroleum, Inc. | Stillwater, OK 74076 | Oil & Gas Operator | Jul 2026 |
| 4963 | Heritage Resources, Inc. | Dallas, TX 75219 | Oil & Gas Operator | Feb 2014 |
| 4964 | Heritage Standard Corporation | Dallas, TX 75206 | Oil & Gas Operator | Jul 2026 |
| 4965 | Hermat Salt Water Disposal, Inc. | Corpus Chrsti, TX 78426 | Oil Operator | Aug 2012 |
| 4966 | Hermes, A. J. | Lindsay, TX 76250 | Oil & Gas Operator | Mar 2018 |
| 4967 | Herms, Walter | Luling, TX 78648 | Oil & Gas Operator | Sep 2002 |
| 4968 | Herod, Bill | Ranger, TX 76470 | Oil & Gas Operator | Apr 2022 |
| 4969 | Herricks Oil Co. | San Angelo, TX 76906 | Oil & Gas Operator | Jan 2010 |
| 4970 | Herring, Casey Oil Co. | Santa Anna, TX 76878 | Oil & Gas Operator | Nov 2008 |
| 4971 | Herring, D Oil & Gas Co. | Santa Anna, TX 76878 | Oil & Gas Operator | Jul 2026 |
| 4972 | Herring, Ray | Graham, TX 76450 | Oil & Gas Operator | Jul 2014 |
| 4973 | Herrmann Energy | Amarillo, TX 79159 | Oil & Gas Operator | May 2015 |
| 4974 | Herrmann, J.B. | Amarillo, TX 79159 | Oil & Gas Operator | Aug 2019 |
| 4975 | Herrmann, S. W. Oil & Gas | Amarillo, TX 79159 | Oil & Gas Operator | Jul 2026 |
| 4976 | Herschap Bros. | Bruni, TX 78344 | Oil & Gas Operator | Jul 2026 |
| 4977 | Herv Oil, LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | May 2026 |
| 4978 | Herzfeld Fabricators Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2017 |
| 4979 | Hess Bros. DRLG. Co. | Gainesville, TX 76240 | Oil & Gas Operator | Mar 2008 |
| 4980 | Hess Corporation | Houston, TX 77010 | Oil & Gas Operator | Aug 2017 |
| 4981 | Hess Production | Quitaque, TX 79255 | Oil & Gas Operator | Jul 2026 |
| 4982 | Hess Seminole Assets LLC | Seminole, TX 79360 | Oil & Gas Operator | Aug 2017 |
| 4983 | Hess, Jerry Operating Co. | Muenster, TX 76252 | Oil & Gas Operator | Jul 2026 |
| 4984 | Hewitt, Alan P. | Midland, TX 79702 | Oil & Gas Operator | Aug 1997 |
| 4985 | Hewitt, Robert J. | Victoria, TX 77901 | Oil & Gas Operator | Jun 2004 |
| 4986 | Hexagon Oil And Gas Inc. | Fort Worth, TX 76132 | Oil & Gas Operator | Jul 2026 |
| 4987 | Hexp Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Jul 2026 |
| 4988 | Heydrick Petroleum Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2026 |
| 4989 | Hez Petroleum Company | Graham, TX 76450 | Oil & Gas Operator | Jul 2026 |
| 4990 | HG Operating LLC | Plano, TX 75026 | Oil & Gas Operator | Jul 2026 |
| 4991 | Hgi Corporation | Nada, TX 77460 | Oil & Gas Operator | Apr 2016 |
| 4992 | HGN Operating Co. | Abilene, TX 79604 | Oil & Gas Operator | Jul 2014 |
| 4993 | HGN Operating I, LLC | Abilene, TX 79604 | Oil & Gas Operator | Jul 2026 |
| 4994 | HH&F Partners | Katy, TX 77450 | Oil & Gas Operator | Sep 2019 |
| 4995 | Hi - Mountain Energy Corporation | Odessa, TX 79762 | Oil & Gas Operator | Jul 2026 |
| 4996 | Hi Plains Hydrocarbons, Inc. | Sunray, TX 79086 | Oil & Gas Operator | Oct 2002 |
| 4997 | Hibbard Energy, LP | Whitehouse, TX 75791 | Oil & Gas Operator | Jul 2026 |
| 4998 | Hibernia Resources III, LLC | Houston, TX 77056 | Oil & Gas Operator | Nov 2023 |
| 4999 | Hibernia Resources IV, LLC | Houston, TX 77056 | Oil & Gas Operator | Jul 2026 |
| 5000 | Hibernia Resources, LLC | Houston, TX 77027 | Oil & Gas Operator | Jun 2014 |